ergo
machine_epsilon.h
Go to the documentation of this file.
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/* Ergo, version 3.8, a program for linear scaling electronic structure
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* calculations.
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* Copyright (C) 2019 Elias Rudberg, Emanuel H. Rubensson, Pawel Salek,
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* and Anastasia Kruchinina.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Primary academic reference:
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* Ergo: An open-source program for linear-scaling electronic structure
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* calculations,
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* Elias Rudberg, Emanuel H. Rubensson, Pawel Salek, and Anastasia
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* Kruchinina,
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* SoftwareX 7, 107 (2018),
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* <http://dx.doi.org/10.1016/j.softx.2018.03.005>
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*
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* For further information about Ergo, see <http://www.ergoscf.org>.
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*/
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#ifndef MACHINE_EPSILON_HEADER
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#define MACHINE_EPSILON_HEADER
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#include "
realtype.h
"
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ergo_real
get_machine_epsilon
(
void
);
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#endif
realtype.h
Definition of the main floating-point datatype used; the ergo_real type.
ergo_real
double ergo_real
Definition:
realtype.h:69
get_machine_epsilon
ergo_real get_machine_epsilon(void)
return machine epsilon.
Definition:
machine_epsilon.cc:50
machine_epsilon.h
Functionality for determining an approximate value of the "machine epsilon" – the smallest number tha...
get_machine_epsilon
ergo_real get_machine_epsilon()
return machine epsilon.
Definition:
machine_epsilon.cc:50
source
utilities_basic
machine_epsilon.h
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